package com.woniuxy01;

public class Test03 {
    public static void main(String[] args) {
        //语法糖：
//        Integer i = Integer.valueOf(128);
//        Integer a=128;
//        Integer b=128;
//        System.out.println(a==b);
//        System.out.println(a.equals(b));

        char c='a';
        System.out.println(c>='a' && c<='z');
        System.out.println(Character.isUpperCase('a'));
        System.out.println(Character.isUpperCase('A'));
        System.out.println(Character.isLowerCase('A'));
        System.out.println(Character.isDigit('1'));

        System.out.println(Integer.MIN_VALUE);
        System.out.println(Integer.MAX_VALUE);
    }

}
